US20170255055A1 - Quantum dot liquid crystal display device - Google Patents

Quantum dot liquid crystal display device Download PDF

Info

Publication number
US20170255055A1
US20170255055A1 US14/908,122 US201514908122A US2017255055A1 US 20170255055 A1 US20170255055 A1 US 20170255055A1 US 201514908122 A US201514908122 A US 201514908122A US 2017255055 A1 US2017255055 A1 US 2017255055A1
Authority
US
United States
Prior art keywords
quantum dot
liquid crystal
crystal display
color filter
display device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/908,122
Inventor
Yuheng Liang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Assigned to SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD. reassignment SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIANG, Yuheng
Publication of US20170255055A1 publication Critical patent/US20170255055A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133502—Antiglare, refractive index matching layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133512—Light shielding layers, e.g. black matrix
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133621—Illuminating devices providing coloured light
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
    • G02F2001/133531—
    • G02F2001/133614—
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/36—Micro- or nanomaterials

Definitions

  • the present invention relates to the field of display technology, and in particular to a quantum dot liquid crystal display device.
  • Quantum dots are nanometer semiconductor particles in the form of spheres or similar to spheres made of elements of II-VI groups or III-V groups, having a particle size between several nanometers and tens of nanometers. Since the particle size of QDs is less than or close to the exciton Bohr radius of the corresponding material, an quantum confinement effect is generally involved, where the energy band structure is changed from quasi-continuity of the body material to the discrete structure of the quantum dot material, making the quantum dots exhibiting unique behavior of stimulated emission of light.
  • the size of the QDs When the size of the QDs is decreased, the energy band gap becomes increased so that the energy required for exciting the QDs and the energy released from the excited QDs returning back to the ground state are increased correspondingly, exhibiting a “blue-shifting” phenomenon of the excitation of the QDs and the fluorescent spectrum.
  • the emission spectrum thereof may be made covering the entire range of visible light. For example, when the size of cadmium selenide is decreased from 6.6 nm to 2.0 nm, the luminescence wavelength “blue-shifts” from red light zone of 635 nm to blue light zone of 460 nm.
  • Quantum dot materials have advantages, such as concentrated luminescence spectrum, high color purity, and luminescence color being easily adjustable through the size, structure, or composition of the quantum dot materials. Such advantages allow for applications in display devices to effectively improve the color gamut and color restorability of the display devices.
  • patent document CN 102944943 A and other similar patent documents propose technical solutions of using quantum dot layers having a pattern structure positioned outside a display panel to replace color filters for the purposes of displaying colors.
  • arranging a quantum dot layer outside a display panel would allow natural light on the outside to excite the quantum dots such that at a bright site, the contrast of the display would get lowered and color shifting may be caused. Thus, when the surrounding is bright, the external light would cause excitation that leads to lowering of contrast and even color shifting.
  • Patent document CN 2032041879 U proposes a one-way light guide film, which comprises ridges formed on a surface to achieve an effect of guiding light in a single direction by means of total internal reflection.
  • a one-way light guide film when positioned on an outer side of a display panel, would be good in preventing quantum dots from being excited by external light thereby improving the contrast of the display panel and eliminating color shifting.
  • such a one-way light guide film increases reflection on an outside surface of a display and thus leads to certain phenomena that affect the viewing experience of the viewer including image doubling resulting from reflection of light and harshness to eyes caused by glare.
  • An object of the present invention is to provide a quantum dot liquid crystal display device, which has high contrast and low surface reflectance and has no image doubling and glare, making viewers perceiving comfortable.
  • the present invention provides a quantum dot liquid crystal display device, which comprises a liquid crystal display panel and a backlight module arranged under the liquid crystal display panel;
  • liquid crystal display panel comprises a color filter substrate and an array substrate that are opposite to each other and a liquid crystal layer arranged between the color filter substrate and the array substrate;
  • the color filter substrate comprises a first base plate, a quantum dot color filter arranged on one side of the first base plate that is adjacent to the liquid crystal layer, a one-way light guide film arranged on one side of the first base plate that is distant from the liquid crystal layer, and an anti-reflection transmission-enhancing film arranged on the one-way light guide film;
  • the one-way light guide film has a light guiding direction that is consistent with a lighting direction of the backlight module.
  • the anti-reflection transmission-enhancing film has a maximum reflectance that is less than 3%.
  • the anti-reflection transmission-enhancing film has a single-layer structure, a double-layer structure, or a multiple-layer structure having three or more layers.
  • the quantum dot color filter comprises therein a quantum dot material that comprises one of II-VI group quantum dot materials, III-V group quantum dot materials, I-III-VI group quantum dot materials, or multiple ones thereof.
  • the quantum dot material of the quantum dot color filter comprises one of CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, and ZnCuInS or multiple ones thereof.
  • the quantum dot color filter comprises a plurality of pixel zones and each of the pixel zones comprises therein a red sub-pixel pattern, a green sub-pixel pattern, and a blue sub-pixel pattern; and the backlight module gives off blue backlighting, the red pixel pattern comprising a quantum dot material film pattern that emits red light upon excited by blue light, the green pixel pattern comprising a quantum dot material film pattern that emits green light upon excited by blue light, the blue pixel pattern comprising a transparent organic photoresist material film pattern.
  • the quantum dot color filter comprises a plurality of pixel zones and each of the pixel zones comprises therein a red sub-pixel pattern, a green sub-pixel pattern, and a blue sub-pixel pattern; and the backlight module gives off ultraviolet backlighting, the red pixel pattern comprising a quantum dot material film pattern that emits red light upon excited by ultraviolet light, the green pixel pattern comprising a quantum dot material film pattern that emits green light upon excited by ultraviolet light, the blue pixel pattern comprising a quantum dot material film pattern that emits blue light upon excited by ultraviolet light.
  • the color filter substrate further comprises an upper polarizer and an upper alignment film formed on the first base plate;
  • the array substrate comprises a second base plate and a thin-film transistor (TFT) layer, a lower polarizer, and a lower alignment film formed on the second base plate.
  • TFT thin-film transistor
  • the upper polarizer and the lower polarizer have polarization directions that are perpendicular to each other or are parallel to each other.
  • a black matrix is provided on the color filter substrate or the array substrate.
  • the present invention also provides a quantum dot liquid crystal display device, which comprises a liquid crystal display panel and a backlight module arranged under the liquid crystal display panel;
  • liquid crystal display panel comprises a color filter substrate and an array substrate that are opposite to each other and a liquid crystal layer arranged between the color filter substrate and the array substrate;
  • the color filter substrate comprises a first base plate, a quantum dot color filter arranged on one side of the first base plate that is adjacent to the liquid crystal layer, a one-way light guide film arranged on one side of the first base plate that is distant from the liquid crystal layer, and an anti-reflection transmission-enhancing film arranged on the one-way light guide film;
  • the one-way light guide film has a light guiding direction that is consistent with a lighting direction of the backlight module
  • the anti-reflection transmission-enhancing film has a maximum reflectance that is less than 3%;
  • the anti-reflection transmission-enhancing film has a single-layer structure, a double-layer structure, or a multiple-layer structure having three or more layers;
  • the quantum dot color filter comprises therein a quantum dot material that comprises one of II-VI group quantum dot materials, III-V group quantum dot materials, I-III-VI group quantum dot materials, or multiple ones thereof;
  • the quantum dot material of the quantum dot color filter comprises one of CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, and ZnCuInS or multiple ones thereof.
  • the efficacy of the present invention is that the present invention provides a quantum dot liquid crystal display device, which comprises a color filter substrate that comprises a one-way light guide film and an anti-reflection transmission-enhancing film formed on a first base plate.
  • the one-way light guide film prevents light from getting incident into the interior of the liquid crystal display device to excite quantum dots so as to overcome the issues of contrast lowering and color shifting caused by external natural light exciting the quantum dots.
  • the anti-reflection transmission-enhancing film helps overcome the issues of glare and image doubling caused by the high reflectance of the surface of the one-way transmitting layer thereby improving comfortableness of viewing of the viewers.
  • the quantum dot liquid crystal display device of the present invention has high contrast and low surface reflectance and does not induce image doubling and eye harshness caused by glare so as to provide enhanced comfortableness of viewing.
  • FIG. 1 is a cross-sectional view illustrating the structure of a first embodiment of a quantum dot liquid crystal display device according to the present invention.
  • FIG. 2 is a cross-sectional view illustrating the structure of a second embodiment of a quantum dot liquid crystal display device according to the present invention.
  • the present invention provides a quantum dot liquid crystal display device, which comprises a liquid crystal display panel 1 and a backlight module 2 arranged under the liquid crystal display panel 1 .
  • the liquid crystal display panel 1 comprises a color filter substrate 10 and an array substrate 20 that are opposite to each other and a liquid crystal layer 30 arranged between the color filter substrate 10 and the array substrate 20 .
  • the color filter substrate 10 comprises a first base plate 11 , a quantum dot color filter 12 arranged on one side of the first base plate 11 that is adjacent to the liquid crystal layer 30 , a one-way light guide film 13 arranged on one side of the first base plate 11 that is distant from the liquid crystal layer 30 , and an anti-reflection transmission-enhancing film 14 arranged on the one-way light guide film 13 .
  • the one-way light guide film 13 has a light guiding direction that is consistent with a lighting direction of the backlight module 2 .
  • the one-way light guide film 13 comprises a thin membrane or glass that guides light in one single direction.
  • the one-way light guide film 13 allows light emitting from the interior of the liquid crystal display panel 1 to transmit through the one-way light guide film 13 to propagate outwards, while external light is blocked and reflected by the one-way light guide film 13 so as not propagate to the quantum dot color filter 12 to excite quantum dots to give off light thereby overcoming the issues of contrast lowering and color shifting caused by quantum dots being excited by external natural light. Meanwhile; the surface the one-way light guide film 13 has great reflectance, which causes issues of glare and reflection light image on a liquid crystal display device, affecting the viewing perception of viewers. In this respect, the anti-reflection transmission-enhancing film 14 arranged on the one-way light guide film 13 help well handle this issue.
  • the anti-reflection transmission-enhancing film 14 has a maximum reflectance that is less than 3%.
  • the anti-reflection transmission-enhancing film 14 can be of a single-layer structure, a double-layer structure, or a multiple-layer structure having three or more layers.
  • the anti-reflection transmission-enhancing film 14 comprises a coating layer, a membrane, or glass that exhibits anti-reflective property.
  • the quantum dot color filter 12 comprises therein at least one of red light, green light, and blue light quantum dots.
  • the quantum dot color filter 12 comprises therein a quantum dot material that comprises one of II-VI group quantum dot materials, III-V group quantum dot materials, group quantum dot materials, or multiple ones thereof.
  • the quantum dot material of the quantum dot color filter 12 comprises one of CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, and ZnCuInS or multiple ones thereof.
  • the color filter substrate 10 further comprises an upper polarizer 15 and an upper alignment film 16 formed on the first base plate 11 .
  • the array substrate 20 comprises a second base plate 21 and a thin-film transistor (TFT) layer 22 , a lower polarizer 23 , and a lower alignment film 24 formed on the second base plate 21 .
  • the upper alignment film 16 and the lower alignment film 24 are respectively arranged on opposite sides of the liquid crystal layer 30 .
  • the upper polarizer 15 is arranged between the quantum dot color filter 12 and the upper alignment film 16 and the lower polarizer 23 is arranged on one side adjacent to the backlight module 2 .
  • the upper polarizer 15 and the lower polarizer 23 have polarization directions that are perpendicular to each other or are parallel to each other. In the case that the polarization directions of the upper polarizer 15 and the lower polarizer 23 are perpendicular to each other, it is a normally dark mode; in the case that the polarization directions of the upper polarizer 15 and the lower polarizer 23 are parallel to each other, it is a normally bright mode.
  • the color filter substrate 10 is provided with a black matrix 17 , or alternatively, the array substrate 20 is provided with a black matrix, or further alternatively, the color filter substrate 10 and the array substrate 20 are both provided with a black matrix.
  • FIG. 1 is a cross-sectional view illustrating the structure of a first embodiment of the quantum dot liquid crystal display device according to the present invention.
  • the quantum dot color filter 12 comprises a plurality of pixel zones, and each of the pixel zones comprises therein a red sub-pixel pattern 121 , a green sub-pixel pattern 122 , and a blue sub-pixel pattern 123 .
  • the backlight module gives off blue backlighting.
  • the red pixel pattern 121 is a quantum dot material film pattern that emits red light when excited by blue light
  • the green pixel pattern 122 is quantum dot that emits green light when excited by blue light
  • the blue pixel pattern 123 is a transparent organic photoresist material film pattern.
  • FIG. 2 is a cross-sectional view illustrating the structure of a second embodiment of the quantum dot liquid crystal display device according to the present invention.
  • the quantum dot color filter 12 comprises a plurality of pixel zones, and each of the pixel zones comprises therein a red sub-pixel pattern 121 , a green sub-pixel pattern 122 , and a blue sub-pixel pattern 123 ′.
  • the backlight module gives off ultraviolet backlighting.
  • the red pixel pattern 121 is a quantum dot material film pattern that emits red light when excited by ultraviolet light
  • the green pixel pattern 122 is a quantum dot material film pattern that emits green light when excited by ultraviolet light
  • the blue pixel pattern 123 ′ is a quantum dot material film pattern that emits blue light when excited by ultraviolet light.
  • the present invention provides a quantum dot liquid crystal display device, which comprises a color filter substrate that comprises a one-way light guide film and an anti-reflection transmission-enhancing film formed on a first base plate.
  • the one-way light guide film prevents light from getting incident into the interior of the liquid crystal display device to excite quantum dots so as to overcome the issues of contrast lowering and color shifting caused by external natural light exciting the quantum dots.
  • the anti-reflection transmission-enhancing film helps overcome the issues of glare and image doubling caused by the high reflectance of the surface of the one-way transmitting layer thereby improving comfortableness of viewing of the viewers.
  • the quantum dot liquid crystal display device of the present invention has high contrast and low surface reflectance and does not induce image doubling and eye harshness caused by glare so as to provide enhanced comfortableness of viewing.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Liquid Crystal (AREA)
  • Optical Filters (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The present invention provides a quantum dot liquid crystal display device. The quantum dot liquid crystal display device has a color filter substrate (10) that includes a first base plate (11), a quantum dot color filter (12) arranged on one side of the first base plate (11) that is adjacent to a liquid crystal layer (30), a one-way light guide film (13) arranged on one side of the first base plate (11) that is distant from the liquid crystal layer (30), and an anti-reflection transmission-enhancing film (14) arranged on the one-way light guide film (13). The one-way light guide film (13) prevents light from getting incident into the interior of the liquid crystal display device to excite quantum dots so as to overcome the issues of contrast lowering and color shifting caused by external natural light exciting the quantum dots. The anti-reflection transmission-enhancing film (14) helps overcome the issues of glare and reflection light image of the liquid crystal display panel, thereby improving comfortableness of viewing of the viewers. Thus, the quantum dot liquid crystal display device has high contrast and low surface reflectance and does not induce image doubling and eye harshness caused by glare so as to provide enhanced comfortableness of viewing.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to the field of display technology, and in particular to a quantum dot liquid crystal display device.
  • 2. The Related Arts
  • With the continuous development of the display technology, people increasingly demand higher and higher quality of displaying. Quantum dots (QDs) are nanometer semiconductor particles in the form of spheres or similar to spheres made of elements of II-VI groups or III-V groups, having a particle size between several nanometers and tens of nanometers. Since the particle size of QDs is less than or close to the exciton Bohr radius of the corresponding material, an quantum confinement effect is generally involved, where the energy band structure is changed from quasi-continuity of the body material to the discrete structure of the quantum dot material, making the quantum dots exhibiting unique behavior of stimulated emission of light. When the size of the QDs is decreased, the energy band gap becomes increased so that the energy required for exciting the QDs and the energy released from the excited QDs returning back to the ground state are increased correspondingly, exhibiting a “blue-shifting” phenomenon of the excitation of the QDs and the fluorescent spectrum. By controlling the size of the QDs, the emission spectrum thereof may be made covering the entire range of visible light. For example, when the size of cadmium selenide is decreased from 6.6 nm to 2.0 nm, the luminescence wavelength “blue-shifts” from red light zone of 635 nm to blue light zone of 460 nm.
  • Quantum dot materials have advantages, such as concentrated luminescence spectrum, high color purity, and luminescence color being easily adjustable through the size, structure, or composition of the quantum dot materials. Such advantages allow for applications in display devices to effectively improve the color gamut and color restorability of the display devices. For example, patent document CN 102944943 A and other similar patent documents propose technical solutions of using quantum dot layers having a pattern structure positioned outside a display panel to replace color filters for the purposes of displaying colors. However, arranging a quantum dot layer outside a display panel would allow natural light on the outside to excite the quantum dots such that at a bright site, the contrast of the display would get lowered and color shifting may be caused. Thus, when the surrounding is bright, the external light would cause excitation that leads to lowering of contrast and even color shifting.
  • Patent document CN 2032041879 U proposes a one-way light guide film, which comprises ridges formed on a surface to achieve an effect of guiding light in a single direction by means of total internal reflection. Such a one-way light guide film, when positioned on an outer side of a display panel, would be good in preventing quantum dots from being excited by external light thereby improving the contrast of the display panel and eliminating color shifting. However, such a one-way light guide film increases reflection on an outside surface of a display and thus leads to certain phenomena that affect the viewing experience of the viewer including image doubling resulting from reflection of light and harshness to eyes caused by glare.
    • SUMMARY OF THE INVENTION
  • An object of the present invention is to provide a quantum dot liquid crystal display device, which has high contrast and low surface reflectance and has no image doubling and glare, making viewers perceiving comfortable.
  • To achieve the above objects, the present invention provides a quantum dot liquid crystal display device, which comprises a liquid crystal display panel and a backlight module arranged under the liquid crystal display panel;
  • wherein the liquid crystal display panel comprises a color filter substrate and an array substrate that are opposite to each other and a liquid crystal layer arranged between the color filter substrate and the array substrate;
  • wherein the color filter substrate comprises a first base plate, a quantum dot color filter arranged on one side of the first base plate that is adjacent to the liquid crystal layer, a one-way light guide film arranged on one side of the first base plate that is distant from the liquid crystal layer, and an anti-reflection transmission-enhancing film arranged on the one-way light guide film; and
  • wherein the one-way light guide film has a light guiding direction that is consistent with a lighting direction of the backlight module.
  • Within a wavelength range of visible light, the anti-reflection transmission-enhancing film has a maximum reflectance that is less than 3%.
  • The anti-reflection transmission-enhancing film has a single-layer structure, a double-layer structure, or a multiple-layer structure having three or more layers.
  • The quantum dot color filter comprises therein a quantum dot material that comprises one of II-VI group quantum dot materials, III-V group quantum dot materials, I-III-VI group quantum dot materials, or multiple ones thereof.
  • The quantum dot material of the quantum dot color filter comprises one of CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, and ZnCuInS or multiple ones thereof.
  • The quantum dot color filter comprises a plurality of pixel zones and each of the pixel zones comprises therein a red sub-pixel pattern, a green sub-pixel pattern, and a blue sub-pixel pattern; and the backlight module gives off blue backlighting, the red pixel pattern comprising a quantum dot material film pattern that emits red light upon excited by blue light, the green pixel pattern comprising a quantum dot material film pattern that emits green light upon excited by blue light, the blue pixel pattern comprising a transparent organic photoresist material film pattern.
  • The quantum dot color filter comprises a plurality of pixel zones and each of the pixel zones comprises therein a red sub-pixel pattern, a green sub-pixel pattern, and a blue sub-pixel pattern; and the backlight module gives off ultraviolet backlighting, the red pixel pattern comprising a quantum dot material film pattern that emits red light upon excited by ultraviolet light, the green pixel pattern comprising a quantum dot material film pattern that emits green light upon excited by ultraviolet light, the blue pixel pattern comprising a quantum dot material film pattern that emits blue light upon excited by ultraviolet light.
  • The color filter substrate further comprises an upper polarizer and an upper alignment film formed on the first base plate; and
  • the array substrate comprises a second base plate and a thin-film transistor (TFT) layer, a lower polarizer, and a lower alignment film formed on the second base plate.
  • The upper polarizer and the lower polarizer have polarization directions that are perpendicular to each other or are parallel to each other.
  • A black matrix is provided on the color filter substrate or the array substrate.
  • The present invention also provides a quantum dot liquid crystal display device, which comprises a liquid crystal display panel and a backlight module arranged under the liquid crystal display panel;
  • wherein the liquid crystal display panel comprises a color filter substrate and an array substrate that are opposite to each other and a liquid crystal layer arranged between the color filter substrate and the array substrate;
  • wherein the color filter substrate comprises a first base plate, a quantum dot color filter arranged on one side of the first base plate that is adjacent to the liquid crystal layer, a one-way light guide film arranged on one side of the first base plate that is distant from the liquid crystal layer, and an anti-reflection transmission-enhancing film arranged on the one-way light guide film;
  • wherein the one-way light guide film has a light guiding direction that is consistent with a lighting direction of the backlight module;
  • wherein within a wavelength range of visible light, the anti-reflection transmission-enhancing film has a maximum reflectance that is less than 3%;
  • wherein the anti-reflection transmission-enhancing film has a single-layer structure, a double-layer structure, or a multiple-layer structure having three or more layers;
  • wherein the quantum dot color filter comprises therein a quantum dot material that comprises one of II-VI group quantum dot materials, III-V group quantum dot materials, I-III-VI group quantum dot materials, or multiple ones thereof; and
  • wherein the quantum dot material of the quantum dot color filter comprises one of CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, and ZnCuInS or multiple ones thereof.
  • The efficacy of the present invention is that the present invention provides a quantum dot liquid crystal display device, which comprises a color filter substrate that comprises a one-way light guide film and an anti-reflection transmission-enhancing film formed on a first base plate. The one-way light guide film prevents light from getting incident into the interior of the liquid crystal display device to excite quantum dots so as to overcome the issues of contrast lowering and color shifting caused by external natural light exciting the quantum dots. Further, the anti-reflection transmission-enhancing film helps overcome the issues of glare and image doubling caused by the high reflectance of the surface of the one-way transmitting layer thereby improving comfortableness of viewing of the viewers. Thus, the quantum dot liquid crystal display device of the present invention has high contrast and low surface reflectance and does not induce image doubling and eye harshness caused by glare so as to provide enhanced comfortableness of viewing.
  • For better understanding of the features and technical contents of the present invention, reference will be made to the following detailed description of the present invention and the attached drawings. However, the drawings are provided for the purposes of reference and illustration and are not intended to impose limitations to the present invention.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The technical solution, as well as other beneficial advantages, of the present invention will become apparent from the following detailed description of an embodiment of the present invention, with reference to the attached drawings.
  • In the drawings:
  • FIG. 1 is a cross-sectional view illustrating the structure of a first embodiment of a quantum dot liquid crystal display device according to the present invention; and
  • FIG. 2 is a cross-sectional view illustrating the structure of a second embodiment of a quantum dot liquid crystal display device according to the present invention.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • To further expound the technical solution adopted in the present invention and the advantages thereof, a detailed description is given to a preferred embodiment of the present invention and the attached drawings.
  • Referring to FIGS. 1-2, the present invention provides a quantum dot liquid crystal display device, which comprises a liquid crystal display panel 1 and a backlight module 2 arranged under the liquid crystal display panel 1.
  • The liquid crystal display panel 1 comprises a color filter substrate 10 and an array substrate 20 that are opposite to each other and a liquid crystal layer 30 arranged between the color filter substrate 10 and the array substrate 20.
  • The color filter substrate 10 comprises a first base plate 11, a quantum dot color filter 12 arranged on one side of the first base plate 11 that is adjacent to the liquid crystal layer 30, a one-way light guide film 13 arranged on one side of the first base plate 11 that is distant from the liquid crystal layer 30, and an anti-reflection transmission-enhancing film 14 arranged on the one-way light guide film 13.
  • The one-way light guide film 13 has a light guiding direction that is consistent with a lighting direction of the backlight module 2. Specifically, the one-way light guide film 13 comprises a thin membrane or glass that guides light in one single direction.
  • The one-way light guide film 13 allows light emitting from the interior of the liquid crystal display panel 1 to transmit through the one-way light guide film 13 to propagate outwards, while external light is blocked and reflected by the one-way light guide film 13 so as not propagate to the quantum dot color filter 12 to excite quantum dots to give off light thereby overcoming the issues of contrast lowering and color shifting caused by quantum dots being excited by external natural light. Meanwhile; the surface the one-way light guide film 13 has great reflectance, which causes issues of glare and reflection light image on a liquid crystal display device, affecting the viewing perception of viewers. In this respect, the anti-reflection transmission-enhancing film 14 arranged on the one-way light guide film 13 help well handle this issue.
  • Specifically, within the wavelength range of the visible light, the anti-reflection transmission-enhancing film 14 has a maximum reflectance that is less than 3%. The anti-reflection transmission-enhancing film 14 can be of a single-layer structure, a double-layer structure, or a multiple-layer structure having three or more layers. The anti-reflection transmission-enhancing film 14 comprises a coating layer, a membrane, or glass that exhibits anti-reflective property.
  • Specifically, the quantum dot color filter 12 comprises therein at least one of red light, green light, and blue light quantum dots. The quantum dot color filter 12 comprises therein a quantum dot material that comprises one of II-VI group quantum dot materials, III-V group quantum dot materials, group quantum dot materials, or multiple ones thereof. Preferably, the quantum dot material of the quantum dot color filter 12 comprises one of CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, and ZnCuInS or multiple ones thereof.
  • Specifically, the color filter substrate 10 further comprises an upper polarizer 15 and an upper alignment film 16 formed on the first base plate 11. The array substrate 20 comprises a second base plate 21 and a thin-film transistor (TFT) layer 22, a lower polarizer 23, and a lower alignment film 24 formed on the second base plate 21. The upper alignment film 16 and the lower alignment film 24 are respectively arranged on opposite sides of the liquid crystal layer 30. The upper polarizer 15 is arranged between the quantum dot color filter 12 and the upper alignment film 16 and the lower polarizer 23 is arranged on one side adjacent to the backlight module 2.
  • Specifically, the upper polarizer 15 and the lower polarizer 23 have polarization directions that are perpendicular to each other or are parallel to each other. In the case that the polarization directions of the upper polarizer 15 and the lower polarizer 23 are perpendicular to each other, it is a normally dark mode; in the case that the polarization directions of the upper polarizer 15 and the lower polarizer 23 are parallel to each other, it is a normally bright mode.
  • Specifically, the color filter substrate 10 is provided with a black matrix 17, or alternatively, the array substrate 20 is provided with a black matrix, or further alternatively, the color filter substrate 10 and the array substrate 20 are both provided with a black matrix.
  • Referring to FIG. 1, FIG. 1 is a cross-sectional view illustrating the structure of a first embodiment of the quantum dot liquid crystal display device according to the present invention. In the instant embodiment, the quantum dot color filter 12 comprises a plurality of pixel zones, and each of the pixel zones comprises therein a red sub-pixel pattern 121, a green sub-pixel pattern 122, and a blue sub-pixel pattern 123. The backlight module gives off blue backlighting. The red pixel pattern 121 is a quantum dot material film pattern that emits red light when excited by blue light; the green pixel pattern 122 is quantum dot that emits green light when excited by blue light; and the blue pixel pattern 123 is a transparent organic photoresist material film pattern.
  • Referring to FIG. 2, FIG. 2 is a cross-sectional view illustrating the structure of a second embodiment of the quantum dot liquid crystal display device according to the present invention. In the instant embodiment, the quantum dot color filter 12 comprises a plurality of pixel zones, and each of the pixel zones comprises therein a red sub-pixel pattern 121, a green sub-pixel pattern 122, and a blue sub-pixel pattern 123′. The backlight module gives off ultraviolet backlighting. The red pixel pattern 121 is a quantum dot material film pattern that emits red light when excited by ultraviolet light; the green pixel pattern 122 is a quantum dot material film pattern that emits green light when excited by ultraviolet light; and the blue pixel pattern 123′ is a quantum dot material film pattern that emits blue light when excited by ultraviolet light.
  • In summary, the present invention provides a quantum dot liquid crystal display device, which comprises a color filter substrate that comprises a one-way light guide film and an anti-reflection transmission-enhancing film formed on a first base plate. The one-way light guide film prevents light from getting incident into the interior of the liquid crystal display device to excite quantum dots so as to overcome the issues of contrast lowering and color shifting caused by external natural light exciting the quantum dots. Further, the anti-reflection transmission-enhancing film helps overcome the issues of glare and image doubling caused by the high reflectance of the surface of the one-way transmitting layer thereby improving comfortableness of viewing of the viewers. Thus, the quantum dot liquid crystal display device of the present invention has high contrast and low surface reflectance and does not induce image doubling and eye harshness caused by glare so as to provide enhanced comfortableness of viewing.
  • Based on the description given above, those having ordinary skills of the art may easily contemplate various changes and modifications of the technical solution and technical ideas of the present invention and all these changes and modifications are considered within the protection scope of right for the present invention.

Claims (16)

What is claimed is:
1. A quantum dot liquid crystal display device, comprising a liquid crystal display panel and a backlight module arranged under the liquid crystal display panel;
wherein the liquid crystal display panel comprises a color filter substrate and an array substrate that are opposite to each other and a liquid crystal layer arranged between the color filter substrate and the array substrate;
wherein the color filter substrate comprises a first base plate, a quantum dot color filter arranged on one side of the first base plate that is adjacent to the liquid crystal layer, a one-way light guide film arranged on one side of the first base plate that is distant from the liquid crystal layer, and an anti-reflection transmission-enhancing film arranged on the one-way light guide film; and
wherein the one-way light guide film has a light guiding direction that is consistent with a lighting direction of the backlight module.
2. The quantum dot liquid crystal display device as claimed in claim 1, wherein within a wavelength range of visible light, the anti-reflection transmission-enhancing film has a maximum reflectance that is less than 3%.
3. The quantum dot liquid crystal display device as claimed in claim 1, wherein the anti-reflection transmission-enhancing film has a single-layer structure, a double-layer structure, or a multiple-layer structure having three or more layers.
4. The quantum dot liquid crystal display device as claimed in claim 1, wherein the quantum dot color filter comprises therein a quantum dot material that comprises one of II-VI group quantum dot materials, III-V group quantum dot materials, group quantum dot materials, or multiple ones thereof.
5. The quantum dot liquid crystal display device as claimed in claim 4, wherein the quantum dot material of the quantum dot color filter comprises one of CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, and ZnCuInS or multiple ones thereof.
6. The quantum dot liquid crystal display device as claimed in claim 1, wherein the quantum dot color filter comprises a plurality of pixel zones and each of the pixel zones comprises therein a red sub-pixel pattern, a green sub-pixel pattern, and a blue sub-pixel pattern; and the backlight module gives off blue backlighting, the red pixel pattern comprising a quantum dot material film pattern that emits red light upon excited by blue light, the green pixel pattern comprising a quantum dot material film pattern that emits green light upon excited by blue light, the blue pixel pattern comprising a transparent organic photoresist material film pattern.
7. The quantum dot liquid crystal display device as claimed in claim 1, wherein the quantum dot color filter comprises a plurality of pixel zones and each of the pixel zones comprises therein a red sub-pixel pattern, a green sub-pixel pattern, and a blue sub-pixel pattern; and the backlight module gives off ultraviolet backlighting, the red pixel pattern comprising a quantum dot material film pattern that emits red light upon excited by ultraviolet light, the green pixel pattern comprising a quantum dot material film pattern that emits green light upon excited by ultraviolet light, the blue pixel pattern comprising a quantum dot material film pattern that emits blue light upon excited by ultraviolet light.
8. The quantum dot liquid crystal display device as claimed in claim 1, wherein the color filter substrate further comprises an upper polarizer and an upper alignment film formed on the first base plate; and
the array substrate comprises a second base plate and a thin-film transistor (TFT) layer, a lower polarizer, and a lower alignment film formed on the second base plate.
9. The quantum dot liquid crystal display device as claimed in claim 8, wherein the upper polarizer and the lower polarizer have polarization directions that are perpendicular to each other or are parallel to each other.
10. The quantum dot liquid crystal display device as claimed in claim 8, wherein a black matrix is provided on the color filter substrate or the array substrate.
11. A quantum dot liquid crystal display device, comprising a liquid crystal display panel and a backlight module arranged under the liquid crystal display panel;
wherein the liquid crystal display panel comprises a color filter substrate and an array substrate that are opposite to each other and a liquid crystal layer arranged between the color filter substrate and the array substrate;
wherein the color filter substrate comprises a first base plate, a quantum dot color filter arranged on one side of the first base plate that is adjacent to the liquid crystal layer, a one-way light guide film arranged on one side of the first base plate that is distant from the liquid crystal layer, and an anti-reflection transmission-enhancing film arranged on the one-way light guide film;
wherein the one-way light guide film has a light guiding direction that is consistent with a lighting direction of the backlight module;
wherein within a wavelength range of visible light, the anti-reflection transmission-enhancing film has a maximum reflectance that is less than 3%;
wherein the anti-reflection transmission-enhancing film has a single-layer structure, a double-layer structure, or a multiple-layer structure having three or more layers;
wherein the quantum dot color filter comprises therein a quantum dot material that comprises one of II-VI group quantum dot materials, III-V group quantum dot materials, I-III-VI group quantum dot materials, or multiple ones thereof; and
wherein the quantum dot material of the quantum dot color filter comprises one of CdSe, CdS, CdTe, ZnS, ZnSe, CuInS, and ZnCuInS or multiple ones thereof.
12. The quantum dot liquid crystal display device as claimed in claim 11, wherein the quantum dot color filter comprises a plurality of pixel zones and each of the pixel zones comprises therein a red sub-pixel pattern, a green sub-pixel pattern, and a blue sub-pixel pattern; and the backlight module gives off blue backlighting, the red pixel pattern comprising a quantum dot material film pattern that emits red light upon excited by blue light, the green pixel pattern comprising a quantum dot material film pattern that emits green light upon excited by blue light, the blue pixel pattern comprising a transparent organic photoresist material film pattern.
13. The quantum dot liquid crystal display device as claimed in claim 11, wherein the quantum dot color filter comprises a plurality of pixel zones and each of the pixel zones comprises therein a red sub-pixel pattern, a green sub-pixel pattern, and a blue sub-pixel pattern; and the backlight module gives off ultraviolet backlighting, the red pixel pattern comprising a quantum dot material film pattern that emits red light upon excited by ultraviolet light, the green pixel pattern comprising a quantum dot material film pattern that emits green light upon excited by ultraviolet light, the blue pixel pattern comprising a quantum dot material film pattern that emits blue light upon excited by ultraviolet light.
14. The quantum dot liquid crystal display device as claimed in claim 11, wherein the color filter substrate further comprises an upper polarizer and an upper alignment film formed on the first base plate; and
the array substrate comprises a second base plate and a thin-film transistor (TFT) layer, a lower polarizer, and a lower alignment film formed on the second base plate.
15. The quantum dot liquid crystal display device as claimed in claim 14, wherein the upper polarizer and the lower polarizer have polarization directions that are perpendicular to each other or are parallel to each other.
16. The quantum dot liquid crystal display device as claimed in claim 14, wherein a black matrix is provided on the color filter substrate or the array substrate.
US14/908,122 2015-10-08 2015-12-22 Quantum dot liquid crystal display device Abandoned US20170255055A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201510646105.9A CN105223724B (en) 2015-10-08 2015-10-08 Quantum dot liquid crystal display device
CN201510646105.9 2015-10-08
PCT/CN2015/098339 WO2017059630A1 (en) 2015-10-08 2015-12-22 Quantum dot liquid crystal display device

Publications (1)

Publication Number Publication Date
US20170255055A1 true US20170255055A1 (en) 2017-09-07

Family

ID=54992770

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/908,122 Abandoned US20170255055A1 (en) 2015-10-08 2015-12-22 Quantum dot liquid crystal display device

Country Status (3)

Country Link
US (1) US20170255055A1 (en)
CN (1) CN105223724B (en)
WO (1) WO2017059630A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170242292A1 (en) * 2016-02-22 2017-08-24 Samsung Display Co., Ltd. Quantum dot color filter and display device including the same
US20170261788A1 (en) * 2015-09-24 2017-09-14 Shenzhen China Star Optoelectronics Technology Co., Ltd. Array substrate and manufacturing method thereof
CN108845453A (en) * 2018-08-28 2018-11-20 武汉华星光电技术有限公司 Optical filtering substrate and liquid crystal display panel
US20190033655A1 (en) * 2017-07-26 2019-01-31 A.U. Vista, Inc. Display cell structure and display device using quantum dot
US20190113799A1 (en) * 2017-10-17 2019-04-18 Samsung Display Co., Ltd. Display device
EP3543774A1 (en) * 2018-03-21 2019-09-25 Samsung Display Co., Ltd Display device
US20200050048A1 (en) * 2018-08-07 2020-02-13 Sharp Kabushiki Kaisha Display device
US10571737B2 (en) 2016-07-08 2020-02-25 Boe Technology Group Co., Ltd. Quantum dot display substrate and manufacturing method thereof, and quantum dot display device
US11022836B2 (en) * 2017-03-15 2021-06-01 Boe Technology Group Co., Ltd. Polarizer and display device

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170087091A (en) * 2016-01-19 2017-07-28 삼성디스플레이 주식회사 Display device
CN105589251B (en) 2016-02-29 2020-03-10 京东方科技集团股份有限公司 Color film substrate, manufacturing method thereof and display device
CN105911749A (en) * 2016-07-05 2016-08-31 京东方科技集团股份有限公司 Array substrate and display device
WO2018103392A1 (en) * 2016-12-06 2018-06-14 青岛海信电器股份有限公司 Quantum dot display panel, backlight module, and liquid crystal display apparatus
CN106681055A (en) * 2017-03-14 2017-05-17 深圳市华星光电技术有限公司 Display device
CN106896568A (en) * 2017-03-28 2017-06-27 深圳市华星光电技术有限公司 Liquid crystal display device
KR20200002926A (en) * 2017-04-24 2020-01-08 가부시키가이샤 폴라테크노 Liquid crystal display
JP7057777B2 (en) * 2017-04-26 2022-04-20 日本化薬株式会社 Liquid crystal display device and optical element
CN106990599A (en) * 2017-05-26 2017-07-28 北京小米移动软件有限公司 Display, display generation method and device
CN107092138A (en) * 2017-06-28 2017-08-25 深圳Tcl新技术有限公司 Liquid crystal display panel and liquid crystal display device
CN107918229B (en) 2018-01-03 2021-03-09 京东方科技集团股份有限公司 Liquid crystal display panel, display device and display method
CN108388044A (en) * 2018-03-07 2018-08-10 青岛海信电器股份有限公司 The manufacturing method and display device of display panel, display panel
CN109656047B (en) * 2018-12-11 2020-08-04 深圳市华星光电半导体显示技术有限公司 Substrate and preparation method
CN110335950A (en) * 2019-04-26 2019-10-15 昆山工研院新型平板显示技术中心有限公司 OLED device, display panel and display device
CN110058449B (en) * 2019-05-13 2020-11-24 深圳市华星光电技术有限公司 Quantum dot liquid crystal display
CN110717443A (en) * 2019-06-26 2020-01-21 神盾股份有限公司 Under-screen fingerprint identification display device
CN112213880B (en) 2019-07-11 2021-11-02 成都辰显光电有限公司 Color conversion assembly, display panel and manufacturing method of color conversion assembly
CN110426890B (en) * 2019-07-29 2023-03-24 昆山龙腾光电股份有限公司 Liquid crystal display panel and liquid crystal display device
CN110591447A (en) * 2019-08-15 2019-12-20 苏州星烁纳米科技有限公司 Ink composition, quantum dot color film and display device
CN111458936A (en) * 2020-04-26 2020-07-28 南方科技大学 Light-emitting module and display panel
CN112578595B (en) * 2020-11-27 2024-03-01 北海惠科光电技术有限公司 Display panel and display device
CN112666748A (en) * 2020-12-25 2021-04-16 舟山扑浪实业有限公司 Preparation method of quantum dot display panel and quantum dot display panel
CN113031345B (en) * 2021-03-24 2022-07-12 武汉华星光电技术有限公司 Display device
CN113985646A (en) * 2021-12-30 2022-01-28 Tcl华星光电技术有限公司 Liquid crystal display device having a plurality of pixel electrodes
CN115524884A (en) * 2022-10-10 2022-12-27 武汉华星光电技术有限公司 Display device and preparation method thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8947619B2 (en) * 2006-07-06 2015-02-03 Intematix Corporation Photoluminescence color display comprising quantum dots material and a wavelength selective filter that allows passage of excitation radiation and prevents passage of light generated by photoluminescence materials
JP4579956B2 (en) * 2007-09-28 2010-11-10 株式会社 日立ディスプレイズ Liquid crystal display
KR101631986B1 (en) * 2009-02-18 2016-06-21 삼성전자주식회사 Light guide plate and display apparatus employing the same
KR20130140462A (en) * 2012-06-14 2013-12-24 삼성디스플레이 주식회사 Photoluminescence display device
CN102944943B (en) * 2012-11-09 2016-03-16 京东方科技集团股份有限公司 quantum dot color filter, liquid crystal panel and display device
KR20140074495A (en) * 2012-12-10 2014-06-18 삼성디스플레이 주식회사 Photoluminescent liquid crystal display panel, photoluminescent liquid crystal display apparatus having the same, and method for manufacturing the same
CN203204189U (en) * 2013-05-13 2013-09-18 京东方科技集团股份有限公司 Unidirectional light-guiding membrane material and display apparatus
CN104765187B (en) * 2015-04-03 2018-04-27 深圳市华星光电技术有限公司 Liquid crystal display

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170261788A1 (en) * 2015-09-24 2017-09-14 Shenzhen China Star Optoelectronics Technology Co., Ltd. Array substrate and manufacturing method thereof
US10007156B2 (en) * 2015-09-24 2018-06-26 Shenzhen China Star Optoelectronics Technology Co., Ltd. Array substrate and manufacturing method thereof
US10371999B2 (en) * 2015-09-24 2019-08-06 Shenzhen China Star Optoelectronics Technology Co., Ltd. Array substrate and manufacturing method thereof
US10534232B2 (en) * 2015-09-24 2020-01-14 Shenzhen China Star Optoelectronics Technology Co., Ltd. Array substrate and manufacturing method thereof
US11237426B2 (en) * 2016-02-22 2022-02-01 Samsung Display Co., Ltd. Display device including quantum dot color filter
US20170242292A1 (en) * 2016-02-22 2017-08-24 Samsung Display Co., Ltd. Quantum dot color filter and display device including the same
US10365509B2 (en) * 2016-02-22 2019-07-30 Samsung Display Co., Ltd. Quantum dot color filter and display device including the same
US10606112B2 (en) 2016-02-22 2020-03-31 Samsung Display Co., Ltd. Display device including quantum dot color filter
US10571737B2 (en) 2016-07-08 2020-02-25 Boe Technology Group Co., Ltd. Quantum dot display substrate and manufacturing method thereof, and quantum dot display device
US11022836B2 (en) * 2017-03-15 2021-06-01 Boe Technology Group Co., Ltd. Polarizer and display device
US20190033655A1 (en) * 2017-07-26 2019-01-31 A.U. Vista, Inc. Display cell structure and display device using quantum dot
US10302990B2 (en) * 2017-07-26 2019-05-28 A.U. Vista, Inc. Display cell structure and display device using quantum dot
US10831056B2 (en) * 2017-10-17 2020-11-10 Samsung Display Co., Ltd. Display device
KR20190043189A (en) * 2017-10-17 2019-04-26 삼성디스플레이 주식회사 Display device
US20190113799A1 (en) * 2017-10-17 2019-04-18 Samsung Display Co., Ltd. Display device
KR102421594B1 (en) * 2017-10-17 2022-07-15 삼성디스플레이 주식회사 Display device
EP3543774A1 (en) * 2018-03-21 2019-09-25 Samsung Display Co., Ltd Display device
US11016325B2 (en) 2018-03-21 2021-05-25 Samsung Display Co., Ltd. Display device
US20200050048A1 (en) * 2018-08-07 2020-02-13 Sharp Kabushiki Kaisha Display device
CN108845453A (en) * 2018-08-28 2018-11-20 武汉华星光电技术有限公司 Optical filtering substrate and liquid crystal display panel

Also Published As

Publication number Publication date
CN105223724B (en) 2018-04-27
CN105223724A (en) 2016-01-06
WO2017059630A1 (en) 2017-04-13

Similar Documents

Publication Publication Date Title
US20170255055A1 (en) Quantum dot liquid crystal display device
TWI634370B (en) Photoluminescence color display
US9927651B2 (en) Display device
CN105093682B (en) Liquid crystal display
TWI587044B (en) Photoluminescence color display
US10782551B2 (en) Display device
KR102556257B1 (en) Color liquid crystal displays and display backlights
KR102168878B1 (en) Stereoscopic image display device using quantum dot color filter and method of fabricating the quantum dot color filter
KR101927115B1 (en) Quantum rod luminescent display device
JP6797624B2 (en) Light source device and display device
TWI655462B (en) Polarizer
KR102298922B1 (en) Liquid crystal display device
KR102486405B1 (en) Quantum rod luminescent display device
CN105140264A (en) Multi-primary quantum dot displayer
KR20130059221A (en) Quantum rod luminescent display device
CN105044985A (en) Liquid crystal displayer
KR20140096887A (en) Flat Panel Display Device
US10451919B2 (en) Display panel and display device
KR101927116B1 (en) Quantum rod luminescent display device
KR102449134B1 (en) Transparent liquid crystal display device
CN216485882U (en) Display panel and display device
WO2016054618A1 (en) Filterless color display

Legal Events

Date Code Title Description
AS Assignment

Owner name: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIANG, YUHENG;REEL/FRAME:037602/0501

Effective date: 20160120

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION